nexmon – Blame information for rev 1

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1 office 1 #!/bin/sh
2 # From Gerrit Code Review 2.9-rc1-172-gd621a9e
3 #
4 # Part of Gerrit Code Review (http://code.google.com/p/gerrit/)
5 #
6 # Copyright (C) 2009 The Android Open Source Project
7 #
8 # Licensed under the Apache License, Version 2.0 (the "License");
9 # you may not use this file except in compliance with the License.
10 # You may obtain a copy of the License at
11 #
12 # http://www.apache.org/licenses/LICENSE-2.0
13 #
14 # Unless required by applicable law or agreed to in writing, software
15 # distributed under the License is distributed on an "AS IS" BASIS,
16 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
17 # See the License for the specific language governing permissions and
18 # limitations under the License.
19 #
20  
21 unset GREP_OPTIONS
22  
23 CHANGE_ID_AFTER="Bug|Issue"
24 MSG="$1"
25  
26 # Check for, and add if missing, a unique Change-Id
27 #
28 add_ChangeId() {
29 clean_message=`sed -e '
30 /^diff --git .*/{
31 s///
32 q
33 }
34 /^Signed-off-by:/d
35 /^#/d
36 ' "$MSG" | git stripspace`
37 if test -z "$clean_message"
38 then
39 return
40 fi
41  
42 if test "false" = "`git config --bool --get gerrit.createChangeId`"
43 then
44 return
45 fi
46  
47 # Does Change-Id: already exist? if so, exit (no change).
48 if grep -i '^Change-Id:' "$MSG" >/dev/null
49 then
50 return
51 fi
52  
53 id=`_gen_ChangeId`
54 T="$MSG.tmp.$$"
55 AWK=awk
56 if [ -x /usr/xpg4/bin/awk ]; then
57 # Solaris AWK is just too broken
58 AWK=/usr/xpg4/bin/awk
59 fi
60  
61 # How this works:
62 # - parse the commit message as (textLine+ blankLine*)*
63 # - assume textLine+ to be a footer until proven otherwise
64 # - exception: the first block is not footer (as it is the title)
65 # - read textLine+ into a variable
66 # - then count blankLines
67 # - once the next textLine appears, print textLine+ blankLine* as these
68 # aren't footer
69 # - in END, the last textLine+ block is available for footer parsing
70 $AWK '
71 BEGIN {
72 # while we start with the assumption that textLine+
73 # is a footer, the first block is not.
74 isFooter = 0
75 footerComment = 0
76 blankLines = 0
77 }
78  
79 # Skip lines starting with "#" without any spaces before it.
80 /^#/ { next }
81  
82 # Skip the line starting with the diff command and everything after it,
83 # up to the end of the file, assuming it is only patch data.
84 # If more than one line before the diff was empty, strip all but one.
85 /^diff --git / {
86 blankLines = 0
87 while (getline) { }
88 next
89 }
90  
91 # Count blank lines outside footer comments
92 /^$/ && (footerComment == 0) {
93 blankLines++
94 next
95 }
96  
97 # Catch footer comment
98 /^\[[a-zA-Z0-9-]+:/ && (isFooter == 1) {
99 footerComment = 1
100 }
101  
102 /]$/ && (footerComment == 1) {
103 footerComment = 2
104 }
105  
106 # We have a non-blank line after blank lines. Handle this.
107 (blankLines > 0) {
108 print lines
109 for (i = 0; i < blankLines; i++) {
110 print ""
111 }
112  
113 lines = ""
114 blankLines = 0
115 isFooter = 1
116 footerComment = 0
117 }
118  
119 # Detect that the current block is not the footer
120 (footerComment == 0) && (!/^\[?[a-zA-Z0-9-]+:/ || /^[a-zA-Z0-9-]+:\/\//) {
121 isFooter = 0
122 }
123  
124 {
125 # We need this information about the current last comment line
126 if (footerComment == 2) {
127 footerComment = 0
128 }
129 if (lines != "") {
130 lines = lines "\n";
131 }
132 lines = lines $0
133 }
134  
135 # Footer handling:
136 # If the last block is considered a footer, splice in the Change-Id at the
137 # right place.
138 # Look for the right place to inject Change-Id by considering
139 # CHANGE_ID_AFTER. Keys listed in it (case insensitive) come first,
140 # then Change-Id, then everything else (eg. Signed-off-by:).
141 #
142 # Otherwise just print the last block, a new line and the Change-Id as a
143 # block of its own.
144 END {
145 unprinted = 1
146 if (isFooter == 0) {
147 print lines "\n"
148 lines = ""
149 }
150 changeIdAfter = "^(" tolower("'"$CHANGE_ID_AFTER"'") "):"
151 numlines = split(lines, footer, "\n")
152 for (line = 1; line <= numlines; line++) {
153 if (unprinted && match(tolower(footer[line]), changeIdAfter) != 1) {
154 unprinted = 0
155 print "Change-Id: I'"$id"'"
156 }
157 print footer[line]
158 }
159 if (unprinted) {
160 print "Change-Id: I'"$id"'"
161 }
162 }' "$MSG" > "$T" && mv "$T" "$MSG" || rm -f "$T"
163 }
164 _gen_ChangeIdInput() {
165 echo "tree `git write-tree`"
166 if parent=`git rev-parse "HEAD^0" 2>/dev/null`
167 then
168 echo "parent $parent"
169 fi
170 echo "author `git var GIT_AUTHOR_IDENT`"
171 echo "committer `git var GIT_COMMITTER_IDENT`"
172 echo
173 printf '%s' "$clean_message"
174 }
175 _gen_ChangeId() {
176 _gen_ChangeIdInput |
177 git hash-object -t commit --stdin
178 }
179  
180  
181 add_ChangeId